I am trying to build the OG projects in Eclipse (Indigo). I have imported the preferences and the OG project into Eclipse. I have also downloaded the IvyDE, Eclipse CS and TestNG plugins. Where do I set references to these plugins in Eclipse to get build the projects correctly.

the preferences file should do this. Try quitting out of Eclipse entirely, relaunching and then doing a ‘Project->Clean…->Clean all projects’. It’s key that you exactly follow the sequence of instructions in the docs and doing things in a different order or skipping what appear to be innocuous steps will stop it working due to bugs in Eclipse. We’re switching over to Maven to try and improve the Eclipse experience.